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Handgun Build Kits

20 of 20 Items
20 of 20 Items

Quality, OEM-compatible handgun build kits for GLOCK® and 1911.

You've probably seen those one-off, custom handguns floating around the web: Fancy serrated slides, colorful accoutrements, threaded muzzles with a brake or comp, and buttery smooth internals, polished to perfection. Well, now you can build you own custom pistol in the same vein -- and you get to avoid those high price tags. Grab a handgun build kit for the GLOCK® or 1911, available in a plethora of calibers and series.

What is a Handgun Build Kit?

It's a gun kit containing all the components you need to assemble a custom pistol piece by piece, except for the frame itself. The frame is usually the part of a handgun that's considered the firearm, so it isn't included with these kits. The advantage of grabbing a kit like this is two-fold: First, you become an expert in how your pistol's put together, providing knowledge for maintenance and troubleshooting.

But more importantly, you get to put your pistol together, carefully polishing and assembling each piece to your liking. With various handgun build kits available in different configurations and calibers, there's a kit available to suit your needs and budget.

What's Included With Your Pistol Kit

Whether you buy a GLOCK or 1911 kit, you'll get all the internals required for assembling your frame. If purchasing a GLOCK kit, some components -- like the locking block rail and rear rail module -- are included with the frame you purchase (sold separately) so those aren't included with your kit.

You'll also receive all the pins, springs, and detents for assembly. Each kit includes a slide, barrel, and the components necessary for assembling the slide.

State Laws May Vary

Contrary to federal law, some states have either restricted or banned the sale, transfer, and ownership of 80% lowers, firearm blanks, and other gun parts. Because of these restrictions, we cannot ship our products to certain states. Please confirm whether your state is restricted on our Shipping & Return Policy before placing an order. We cannot fulfill orders to restricted states if placed.


DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.

DISCLAIMER: “GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither Gun Builders Depot, a/k/a nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit

We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.